Press for extracting liquids



3 Sheets-She a l INVENTOR. Manra Sch war:

H; e scHwARZ PRESS FOR EXTRACTING LIQUIDS Flled Aprll 5, 1927 Nov. 11, 1930.

Nov. 11, 1930.

H. G. SCHWARZ PRESS FOR EXTRACT ING LIQUIDS Filed April 5, 1927 3 Sheets-Sheet 2 INVENTOR. Hm I 56/1 ww Nov. 11, 1930. H. G. SCHWARZ PRESS FOR EXTRACTING LIQUIDS 3 Sheets-Sheet 3 Filed April 5, 1927 INVEN TOR.

' finr c/xwcgrz BY I . ATTORNEY.

1 latented Nov. 11, 1930 nanny e. scnwnnz,

P QFFHQE or nnnvnn, comma PRESS FOR EXTRAG'IING- LIQUIDS Application filed April 5, .1927. Serial No. 181,165.

This invention relates to presses for the extraction of juices from organic matter. The invention is particularly ada ted for the extraction of oils and other liqui s from fish and fish residue but it may also be used to advantage in the extraction of juices from pineapples, citrus fruits, grapes, apples, raisins, etc.

The principal object of the invention is to provide a press of the above stated type in which a high percentage of extraction is ob-' tained with a correspondingly small expenditure of mechanical energy and with a negligible loss of solids. Other novel features reside in details of construction and the combinations and arrangernents of the elements and parts which cooperate to attain the before-mentioned object as will be fully 'set forth in the course of go the following description.

In the accompanying drawings in the several views of which like parts have been similarl designated,

igures 1A an as sectional elevation of a press constructed in accordance with the present invention Figure 2, a vertical section along the line 2-2, Figure 1A, I

Figure 3, a similar section taken on the line no 3-3, Figure 1B,

Figure 4, a section along the line 4-4, Figure 1A,

Figure 5, an enlarged sectional view of the adjustable member of the ress which con- 85 trols the discharge of the so id residue of the extraction process an Figure 6, an enlarged'section onthe line 6-6, Figure 2. The press as shown in the drawings, comprises a base or foundation structure 5 including bearings G and 7 for'the sup ort of the rotary element of the machine. he rotary element includes a horizontal shaft 8 a. hollow conical body 9, rigidly mounted 46 thereon, and a helical blade or screw 10 extending around the peripheryoi the body,

A suitable reduction gearing 12 connects the shaft with a conveniently coated motor and a clutch 13 serves to control the operative connection of the gearing with the mod 113 represent conjointly-a tor in the usualmanner. The bearing 7 at the end of the body opposite to that at which it connects with the motor, is constructed to resist end-thrust.

' A cylindrical screen 14: horizontally su ported on the base, surrounds the rotary b0 y in'coaxial relation thereto to provide an annular space 15 of radually decreasing width through which t e material fed into the screen through an opening 16 at an end thereof, is forcibly impelled b the action of the helical blade whose perip eral ed e extends in close adjacency to the inner surlace of the screen. Y a

A stuifing box 17 at the feed end of the sgrefen prevents leakage of liquids around the s a t. by a head 18 which has t e feed 0 ening and the stufling box mentioned herein store, and

' a head 19 which provides an anular passage for the final extraction of the juices from the material and the discharge of the solid residue as will hereinafter be more fully explained.

j The screen 14 is fastened to the heads by machine bolts 20 togdther with a casing 21 which surrounds the u per ortion of the screen, Rods 22 exten ing t rough slotted lugs 23 and 24 on the heads exteriorly of the screen and secured by nuts or other means, fasten the heads together, and the screen between the heads is reenforced by surround inc bands 25.

liods 26 fastened to certain of the bands extend transversely throu h the space labetween the rotar body an the screen to prevent the material forced through' the space The screen is'sugported on the base by the screw blade from rotating with the bod a The conical body is as stated before, smallest at the feed and of the screen and the pitch of the helical blade decreases rogressively toward the larger end of the be y to restrict the advance of the material through the compression space in ratio to the uniform increase in pressure owing to the gradually decreasing width of the s ace.

The hollow conical ody has at its larger and a lurality of screen-covered openings 27 for t e passage of juices to its interior at I I the point of highest pressure and it has withchine, .a hollow c lindrical open-ended'ex tension 28 provide with screen covered openthrough the annular ard-metal ring inside a shiel 36 ings 29 through which issue part-of the'juices extracted from material pressed through an e 30 between'the extension and the .head, whi h assage is continuous with j rial is fed through the opening 16 mto the compression space 15 and 1s impelled through V said space by the action of the screw blade element. The gradually nar-' annular pa the compression 0 amber 15.

' The head 19 is composed of two flanged sections supported one upon the other and fas tened together'by bolts 31 so that-the upper,

section may be lifted for cleaning purposes after the rods 22 by which the two screen heads are connected have been removed through t e slots of the lugs in which they are fasten The two sections of the head are flanged at opposite ends and ribbed between their anges, forthe support of screens 32 which a the screened sur ace of the part 28 of the 'rotary element and the lower section has openings 33 thr ugh which the juices passing reens are discharged."

Fastened sections are b flies 34 which project into the annular space 30 around the rotary element within the head to prevent the material assing through the element. j These allies are sharp edgedv at their ends forward with relation to the moves ment of the material so that they may cut into the material and thereby facilitate the onward movement thereof through the pasastened at the end of the rotary element 'exteriorl of the stationary head is a flan which prevents the discharge of matter beyond the end of the machine. The shield has at itslower end a trough-shaped pocket 37 to receive matter that passes through the space sion 0 'eled end portion adapted to enter 'thepassage edge hof the shield.

between the flange of the ring and the inner 0 ring is externally screw-threaded for the application of a nut 38 which is in drive ing connection with a member 39 adapted to control the discharge of the solid residue from the p 30 between the rotary element and the head. Y

The controlling member consists of a ring slidab? fitted around the cylindrical extenthe rotary element and having a bevbetween the extension and the head of the screen. By turning the nut on the screw-.,

threads of the ring, the member 39 may be advanced into the passa thereby the width of the outlet t ereof and 'contro ling the discharge of solids throu 11 let. 'Both the nut and the contro member are made in flanged sections connected by bolts and the flanges 40 on the'nnt provide a convenient means for its rotation.

The member 39'is held against rotation on op osed in spacedrelation, to

tween theflanges of the head me from tu nmg wit the r head,.in which are and will by a continuous dlsch ent is said out- "j the rotating element b keys 41, and it is in the head 19 at the discharge end of the maconnected with the nut- 'y a swivel joint. A a

circumferential flan e 42 on the nut, extending across the joint g tween the flange 43 on the ring 35 and the'inner edge of the shield aids in preventing .solids from passing throu h said joint into the trough 37.

In t e operation of the machine, the matetary element causes the material to be subjected to. correspondingly increased pressure and owin to the progressivel decreasing.

pitch of t e screw blade, the a Vance of the I material is correspondingly retarded.

The oils and other 'uices extracted from the material pass thro the surrounding screen -andat the point 0 greatest ressure at the ditional outlet largest end of the cone an for the liquids is provided bags screen-covered o nmgs in the conical y. The residue 0 the mat'erialafter it is by the screw is pushed into the annular p e 30 between the cylindrical endportions of e rotary element and the inner surface of the assagethe remaining uices 39 as herein fore explained.

The rods 26 and the baflles 34, keep the material from turning in the com ression vention that the screensat the points of greatest pressure, which cover the openings in the conical body opposite sides of the annular'passage 30 are 0 smaller mesh than the screen around the body portion of the rotary element thereby preventing the discharge of with the uices in the zone of greatest It will be apparent that theiipressure exerted upon the material is dually increased at a uniform ratio and t at in consequence the machine is free from st produced in expressed rom= thematerial to pass.

spaces. It is an important feature 0 the ingm 9 and the openings at 9 other presses by stepped changes in pressare,

an to a continuous feed, operate at all times at a maximum capacity. 7

Having th, described my invention, what I claim and desire to secure-by Letters Pat- 1. A press of the character described comprising a cylindrical screen element having a discharge opening, a rotary element including a conical bodyin the screen element, a

flanged cylindrical extension without the same, and a helical screw blade on the conical body, a head spacedfrom the extension to provide a passage for the discharge of solids, and an annular shield beyond t e passage, the flange on the extension being inside the opening of the shield.

2. A press of the character described comprising a cylindrical screen element having a discharge opening, a rotary element including a conical body in the screen element, a flanged cylindrical extension without the same, and a helical screw blade on the conical body, a head spaced from the extension to provide a passage for the dischar e of solids, and an annular shield beyond t e passage, the flange on the extension being inside the opening of the shield, and the shield having a pocket at its lower end.

3. A press of the character described comprising a cylindrical screen element having adischarge opening, a rotary element including a conical body in the screen element,

a flanged cylindrical extension Without the same, having a screw-threaded end portion, and a helical screw blade on the conical body, a head spaced from the extension to provide a passage for the discharge of solids, a beveled member movable on the extension to vary the outlet of thepassage, and a nut cooperative with the screw thread of the extension and in driving relation to the member.

4. A press of the character described comprising a cylindrical screen element having a discharge opening, a rotary element including a conical body in the screen element, a flanged cylindrical extension without the same, having a screw threaded end portion,

and a helical screw blade on the conical body, a head spaced from the extension to provide a passage for the discharge of solids, a beveled member movable on the extension to vary the outlet of the passage, a nut cooperative with the screw thread of the extension and in driving relation to the member, and an annular shield beyond the passage, the flange on the extension being in the opening of the shield, and the nut having a-flange covering I the joint between the shield and the flange on the extension.

In testimony whereof I have aflixed my signature.

HENRY G. SCHWARZ. 

